Thermochromic Luminescence of Sol−Gel Films Based on Copper Iodide Clusters
The incorporation of copper iodide clusters in sol−gel silica has been investigated to prepare materials with original luminescent properties. The synthesis, structural characterizations, and optical properties of sol−gel films containing [Cu4I4L4] clusters, L = phosphine-based ligands, are reported...
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| Veröffentlicht in: | Chemistry of materials 2008-11, Vol.20 (22), p.7010-7016 |
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| creator | Tard, Cédric Perruchas, Sandrine Maron, Sébastien Le Goff, Xavier F Guillen, François Garcia, Alain Vigneron, Jacky Etcheberry, Arnaud Gacoin, Thierry Boilot, Jean-Pierre |
| description | The incorporation of copper iodide clusters in sol−gel silica has been investigated to prepare materials with original luminescent properties. The synthesis, structural characterizations, and optical properties of sol−gel films containing [Cu4I4L4] clusters, L = phosphine-based ligands, are reported. Clusters studied are [Cu4I4(PPh2(CH2)2Si(OCH2CH3)3)4] (C1), able to copolymerize with the silica matrix, and [Cu4I4(PPh2(CH2)2CH3)4] (C2) used as a reference for the characterizations. The luminescent films exhibit the optical properties of these clusters in accordance with XPS and NMR studies demonstrating their integrity in the gel matrix. The temperature dependence of light emission properties of clusters and films shows, for the first time for phosphine-based [Cu4X4L4] clusters, thermochromic luminescence with bright yellow luminescence at room temperature and purple emission at 77 K. As a result of weak Cu−Cu interactions, the two emissive states appear as highly coupled with a low energy barrier (2 kJ·mol−1), leading to a controlled thermochromism in a large temperature range. |
| doi_str_mv | 10.1021/cm801780g |
| format | Article |
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The synthesis, structural characterizations, and optical properties of sol−gel films containing [Cu4I4L4] clusters, L = phosphine-based ligands, are reported. Clusters studied are [Cu4I4(PPh2(CH2)2Si(OCH2CH3)3)4] (C1), able to copolymerize with the silica matrix, and [Cu4I4(PPh2(CH2)2CH3)4] (C2) used as a reference for the characterizations. The luminescent films exhibit the optical properties of these clusters in accordance with XPS and NMR studies demonstrating their integrity in the gel matrix. The temperature dependence of light emission properties of clusters and films shows, for the first time for phosphine-based [Cu4X4L4] clusters, thermochromic luminescence with bright yellow luminescence at room temperature and purple emission at 77 K. As a result of weak Cu−Cu interactions, the two emissive states appear as highly coupled with a low energy barrier (2 kJ·mol−1), leading to a controlled thermochromism in a large temperature range.</description><identifier>ISSN: 0897-4756</identifier><identifier>EISSN: 1520-5002</identifier><identifier>DOI: 10.1021/cm801780g</identifier><language>eng</language><publisher>American Chemical Society</publisher><subject>Inorganic Solids and Ceramics ; Optical Materials (including Non-Linear Optic, Photonic, and Optoelectronic Materials) ; Sol−Gel Chemistry/Processing</subject><ispartof>Chemistry of materials, 2008-11, Vol.20 (22), p.7010-7016</ispartof><rights>Copyright © 2008 American Chemical Society</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a363t-c0fc81753c0e404c4a922bb9990d5fb4c09bdf072aaf7cc0ba93f72da7bbf56b3</citedby><cites>FETCH-LOGICAL-a363t-c0fc81753c0e404c4a922bb9990d5fb4c09bdf072aaf7cc0ba93f72da7bbf56b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/cm801780g$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/cm801780g$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2752,27053,27901,27902,56713,56763</link.rule.ids></links><search><creatorcontrib>Tard, Cédric</creatorcontrib><creatorcontrib>Perruchas, Sandrine</creatorcontrib><creatorcontrib>Maron, Sébastien</creatorcontrib><creatorcontrib>Le Goff, Xavier F</creatorcontrib><creatorcontrib>Guillen, François</creatorcontrib><creatorcontrib>Garcia, Alain</creatorcontrib><creatorcontrib>Vigneron, Jacky</creatorcontrib><creatorcontrib>Etcheberry, Arnaud</creatorcontrib><creatorcontrib>Gacoin, Thierry</creatorcontrib><creatorcontrib>Boilot, Jean-Pierre</creatorcontrib><title>Thermochromic Luminescence of Sol−Gel Films Based on Copper Iodide Clusters</title><title>Chemistry of materials</title><addtitle>Chem. Mater</addtitle><description>The incorporation of copper iodide clusters in sol−gel silica has been investigated to prepare materials with original luminescent properties. The synthesis, structural characterizations, and optical properties of sol−gel films containing [Cu4I4L4] clusters, L = phosphine-based ligands, are reported. Clusters studied are [Cu4I4(PPh2(CH2)2Si(OCH2CH3)3)4] (C1), able to copolymerize with the silica matrix, and [Cu4I4(PPh2(CH2)2CH3)4] (C2) used as a reference for the characterizations. The luminescent films exhibit the optical properties of these clusters in accordance with XPS and NMR studies demonstrating their integrity in the gel matrix. The temperature dependence of light emission properties of clusters and films shows, for the first time for phosphine-based [Cu4X4L4] clusters, thermochromic luminescence with bright yellow luminescence at room temperature and purple emission at 77 K. As a result of weak Cu−Cu interactions, the two emissive states appear as highly coupled with a low energy barrier (2 kJ·mol−1), leading to a controlled thermochromism in a large temperature range.</description><subject>Inorganic Solids and Ceramics</subject><subject>Optical Materials (including Non-Linear Optic, Photonic, and Optoelectronic Materials)</subject><subject>Sol−Gel Chemistry/Processing</subject><issn>0897-4756</issn><issn>1520-5002</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNpt0LFOwzAUBVALgUQpDPyBFwaGwLMTx_EIgZaiViC1zJbt2DQliSu7leAPmPlEvoSgok5Mbzm6uu8idE7gigAl16YtgPACXg_QgDAKCQOgh2gAheBJxll-jE5iXAGQnhcDNFssbWi9WQbf1gZPt23d2WhsZyz2Ds998_35NbYNHtVNG_GtirbCvsOlX69twBNf1ZXFZbONGxviKTpyqon27O8O0cvoflE-JNOn8aS8mSYqzdNNYsCZgnCWGrAZZCZTglKthRBQMaczA0JXDjhVynFjQCuROk4rxbV2LNfpEF3uck3wMQbr5DrUrQofkoD83UHud-htsrN1X_F9D1V4kzlPOZOL57mcjcZ34pERedf7i51XJsqV34au_-Sf3B_VomzN</recordid><startdate>20081125</startdate><enddate>20081125</enddate><creator>Tard, Cédric</creator><creator>Perruchas, Sandrine</creator><creator>Maron, Sébastien</creator><creator>Le Goff, Xavier F</creator><creator>Guillen, François</creator><creator>Garcia, Alain</creator><creator>Vigneron, Jacky</creator><creator>Etcheberry, Arnaud</creator><creator>Gacoin, Thierry</creator><creator>Boilot, Jean-Pierre</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20081125</creationdate><title>Thermochromic Luminescence of Sol−Gel Films Based on Copper Iodide Clusters</title><author>Tard, Cédric ; Perruchas, Sandrine ; Maron, Sébastien ; Le Goff, Xavier F ; Guillen, François ; Garcia, Alain ; Vigneron, Jacky ; Etcheberry, Arnaud ; Gacoin, Thierry ; Boilot, Jean-Pierre</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a363t-c0fc81753c0e404c4a922bb9990d5fb4c09bdf072aaf7cc0ba93f72da7bbf56b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Inorganic Solids and Ceramics</topic><topic>Optical Materials (including Non-Linear Optic, Photonic, and Optoelectronic Materials)</topic><topic>Sol−Gel Chemistry/Processing</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tard, Cédric</creatorcontrib><creatorcontrib>Perruchas, Sandrine</creatorcontrib><creatorcontrib>Maron, Sébastien</creatorcontrib><creatorcontrib>Le Goff, Xavier F</creatorcontrib><creatorcontrib>Guillen, François</creatorcontrib><creatorcontrib>Garcia, Alain</creatorcontrib><creatorcontrib>Vigneron, Jacky</creatorcontrib><creatorcontrib>Etcheberry, Arnaud</creatorcontrib><creatorcontrib>Gacoin, Thierry</creatorcontrib><creatorcontrib>Boilot, Jean-Pierre</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><jtitle>Chemistry of materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tard, Cédric</au><au>Perruchas, Sandrine</au><au>Maron, Sébastien</au><au>Le Goff, Xavier F</au><au>Guillen, François</au><au>Garcia, Alain</au><au>Vigneron, Jacky</au><au>Etcheberry, Arnaud</au><au>Gacoin, Thierry</au><au>Boilot, Jean-Pierre</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermochromic Luminescence of Sol−Gel Films Based on Copper Iodide Clusters</atitle><jtitle>Chemistry of materials</jtitle><addtitle>Chem. Mater</addtitle><date>2008-11-25</date><risdate>2008</risdate><volume>20</volume><issue>22</issue><spage>7010</spage><epage>7016</epage><pages>7010-7016</pages><issn>0897-4756</issn><eissn>1520-5002</eissn><abstract>The incorporation of copper iodide clusters in sol−gel silica has been investigated to prepare materials with original luminescent properties. The synthesis, structural characterizations, and optical properties of sol−gel films containing [Cu4I4L4] clusters, L = phosphine-based ligands, are reported. Clusters studied are [Cu4I4(PPh2(CH2)2Si(OCH2CH3)3)4] (C1), able to copolymerize with the silica matrix, and [Cu4I4(PPh2(CH2)2CH3)4] (C2) used as a reference for the characterizations. The luminescent films exhibit the optical properties of these clusters in accordance with XPS and NMR studies demonstrating their integrity in the gel matrix. The temperature dependence of light emission properties of clusters and films shows, for the first time for phosphine-based [Cu4X4L4] clusters, thermochromic luminescence with bright yellow luminescence at room temperature and purple emission at 77 K. As a result of weak Cu−Cu interactions, the two emissive states appear as highly coupled with a low energy barrier (2 kJ·mol−1), leading to a controlled thermochromism in a large temperature range.</abstract><pub>American Chemical Society</pub><doi>10.1021/cm801780g</doi><tpages>7</tpages></addata></record> |
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| subjects | Inorganic Solids and Ceramics Optical Materials (including Non-Linear Optic, Photonic, and Optoelectronic Materials) Sol−Gel Chemistry/Processing |
| title | Thermochromic Luminescence of Sol−Gel Films Based on Copper Iodide Clusters |
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